readme.rst 2.6 KB

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  1. Trusted Firmware-A
  2. ==================
  3. Trusted Firmware-A (TF-A) is a reference implementation of secure world software
  4. for `Arm A-Profile architectures`_ (Armv8-A and Armv7-A), including an Exception
  5. Level 3 (EL3) `Secure Monitor`_. It provides a suitable starting point for
  6. productization of secure world boot and runtime firmware, in either the AArch32
  7. or AArch64 execution states.
  8. TF-A implements Arm interface standards, including:
  9. - `Power State Coordination Interface (PSCI)`_
  10. - `Trusted Board Boot Requirements CLIENT (TBBR-CLIENT)`_
  11. - `SMC Calling Convention`_
  12. - `System Control and Management Interface (SCMI)`_
  13. - `Software Delegated Exception Interface (SDEI)`_
  14. The code is designed to be portable and reusable across hardware platforms and
  15. software models that are based on the Armv8-A and Armv7-A architectures.
  16. In collaboration with interested parties, we will continue to enhance TF-A
  17. with reference implementations of Arm standards to benefit developers working
  18. with Armv7-A and Armv8-A TrustZone technology.
  19. Users are encouraged to do their own security validation, including penetration
  20. testing, on any secure world code derived from TF-A.
  21. More Info and Documentation
  22. ---------------------------
  23. To find out more about Trusted Firmware-A, please `view the full documentation`_
  24. that is available through `trustedfirmware.org`_.
  25. --------------
  26. *Copyright (c) 2013-2019, Arm Limited and Contributors. All rights reserved.*
  27. .. _Armv7-A and Armv8-A: https://developer.arm.com/products/architecture/a-profile
  28. .. _Secure Monitor: http://www.arm.com/products/processors/technologies/trustzone/tee-smc.php
  29. .. _Power State Coordination Interface (PSCI): PSCI_
  30. .. _PSCI: http://infocenter.arm.com/help/topic/com.arm.doc.den0022d/Power_State_Coordination_Interface_PDD_v1_1_DEN0022D.pdf
  31. .. _Trusted Board Boot Requirements CLIENT (TBBR-CLIENT): https://developer.arm.com/docs/den0006/latest/trusted-board-boot-requirements-client-tbbr-client-armv8-a
  32. .. _SMC Calling Convention: http://infocenter.arm.com/help/topic/com.arm.doc.den0028b/ARM_DEN0028B_SMC_Calling_Convention.pdf
  33. .. _System Control and Management Interface (SCMI): SCMI_
  34. .. _SCMI: http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/DEN0056A_System_Control_and_Management_Interface.pdf
  35. .. _Software Delegated Exception Interface (SDEI): SDEI_
  36. .. _SDEI: http://infocenter.arm.com/help/topic/com.arm.doc.den0054a/ARM_DEN0054A_Software_Delegated_Exception_Interface.pdf
  37. .. _Arm A-Profile architectures: https://developer.arm.com/architectures/cpu-architecture/a-profile
  38. .. _view the full documentation: https://www.trustedfirmware.org/docs/tf-a
  39. .. _trustedfirmware.org: http://www.trustedfirmware.org